Some people also choose glutathione precursors, such as N-acetylcysteine (NAC), which provide the building blocks necessary for the body to produce its own glutathione
Ali S, Hamayun M, Siraj M, Khan SA, Kim H-Y, Lee B
Fish-derived collagen peptides upregulate both VEGF and IGF-1 (insulin-like growth factor 1, which drives dermal papilla cell proliferation) in cell culture and animal studies
A 2015 systematic review and meta-analysis of 8 randomised trials found that NAC produced higher pregnancy rates than placebo across the placebo-comparison subgroup (pregnancy odds ratio 3.97, 95% CI 2.077.59), though in the same analysis NAC was less effective than metformin for pregnancy outcomes (OR 0.40, 95% CI 0.230.71)
Unknown if the risk of pancreatitis is increased in such patients
Presentation 1: Supplementary Table 2 Diets found to be effective for weight loss